A green approach to the fabrication of titania–graphene nanocomposites: Insights relevant to efficient photodegradation of Acid Orange 7 dye under solar irradiation

Muthirulan, P.; Devi, C. Nirmala; Sundaram, M. Meenakshi

doi:10.1016/j.mssp.2013.11.036

Cited by 21 publications

(11 citation statements)

References 61 publications

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“…S1 shows the DR UV-Vis spectra for GA, TiO 2 , and the TiO 2 -GA (15) composite Please do not adjust margins Please do not adjust margins efficiency. 19,24,32,[37][38][39][40][41][42] According to the previous work 19 …”

Section: Resultsmentioning

confidence: 99%

Synergetic adsorption and photocatalytic degradation of pollutants over 3D TiO2—graphene aerogel composites synthesized via a facile one-pot route

Zhang

Mei

et al. 2016

Photochem Photobiol Sci

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A series of composites consisting of anatase TiO2 nanocrystals and three-dimensional (3D) graphene aerogel (TiO2-GA) were self-assembled directly from tetrabutyl titanate and graphene oxides via a one-pot hydrothermal process. TiO2 was found to uniformly distribute inside the 3D network of GA in the resulting composites with large surface areas (SBET > 125 m(2) g(-1)) and high pore volumes (Vp > 0.22 cm(3) g(-1)). In comparison with GA and TiO2, the composites possessed much higher adsorption capacities and visible light photocatalytic activity in the degradation of rhodamine B (RhB). With an initial concentration of 20.0 mg L(-1) of RhB, the adsorptive decolourization of RhB was as high as 95.1% and the total decolourization value reached up to 98.7% under visible light irradiation over 5.0 mg of the resulting composites. It was elucidated that the physical and chemical properties of the TiO2-GA composites could be ascribed to their unique 3D nanoporous structure with high surface areas and the synergetic activities of graphene nanosheets and TiO2 nanoparticles.

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Section: Resultsmentioning

confidence: 99%

Synergetic adsorption and photocatalytic degradation of pollutants over 3D TiO2—graphene aerogel composites synthesized via a facile one-pot route

Zhang

Mei

et al. 2016

Photochem Photobiol Sci

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“…The mean crystallite size of the nanopowder was calculated from Scherer's formula given by eqn. 3 [47].…”

Section: Methodsmentioning

confidence: 99%

Synergistic Mechanism of ZnFe2O4/ZnO Nanopowder in Photocatalytic Degradation of Acid Orange 7

Ahmed¹,

Chandrasekhar²,

Jahagirdar³

et al. 2018

Asian J. Chem.

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ZnFe2O4/ZnO nanopowder was prepared by solution combustion method. The characterization of the nanopowder was done by powder X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy. Powder X-ray diffraction pattern of the nanopowder exhibited the spinel phase of zinc ferrite and wurtzite phase of zinc oxide. The nanopowder was used for the photocatalytic removal of acid orange dye 7 from its aqueous solution. The effect of various factors such as initial dye concentration, dosage of the photocatalyst and irradiation time was studied. An analysis of the results indicated that the dye degradation was more in case of 10 and 20 ppm dye solutions. The dye degradation decreased with increasing initial concentration. ZnFe2O4/ZnO can be used as a better photocatalyst for the removal of dyes from their aqueous solutions.

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“…Cu K α radiation (λ = 1.5418 Å) at 40 kV was used. The mean crystallite size of the nanopowder was estimated using (2) known as the Scherer's equation [27].…”

Section: B Characterization Of the Nanopowdermentioning

confidence: 99%

Adsorption of Amido Black 10B by ZnFe2O4-ZnO Nanopowder

Ahmed,

Jahagirdar,

Somashekar

2019

IJEAT

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ZnFe2O4 -ZnO nanopowder was synthesized by solution combustion method using zinc nitrate and ferric nitrate as oxidizers and oxalyl dihydrazide as fuel. The nanopowder was characterized by powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) surface area measurements. The nanopowder was used as adsorbent for the removal of the dye Amido Black 10B (AB 10) from its aqueous solution. The effect of dosage of the nanopowder and contact time was studied. The results indicated that the nanopowder acted as a good adsorbent for the removal of AB 10. More than 89% removal of the dye was achieved for a catalyst dosage of 0.8g of the nanopowder per liter of the dye solution. The optimum contact time was found to be 40 minutes. Adsorption isotherms and adsorption kinetic models were applied to the adsorption data to know the mechanism and kinetics of adsorption. The adsorption data fitted well for the Langmuir adsorption isotherm and followed pseudo-second order kinetics.

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A green approach to the fabrication of titania–graphene nanocomposites: Insights relevant to efficient photodegradation of Acid Orange 7 dye under solar irradiation

Cited by 21 publications

References 61 publications

Synergetic adsorption and photocatalytic degradation of pollutants over 3D TiO2—graphene aerogel composites synthesized via a facile one-pot route

Synergetic adsorption and photocatalytic degradation of pollutants over 3D TiO2—graphene aerogel composites synthesized via a facile one-pot route

Synergistic Mechanism of ZnFe2O4/ZnO Nanopowder in Photocatalytic Degradation of Acid Orange 7

Adsorption of Amido Black 10B by ZnFe2O4-ZnO Nanopowder

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